Turning plug



April 17, 1928.

J. C. JANKUS TURNING PLUG Filed Deo. 22, 1922 2 Sheets- Sheet l l "un nbentoz 33913 M SHOM/Muff 20%, MWLM April 17, 1928.,

J. C. JANKUS TURNING PLUG Filed Deo. 22, 1922 2 Shee'ts-Shee Patented Apr. 17,'. 1,9218.

UNiTED jsTATEs PATENT oFFICE.

.Tacx CARL JANxUs,l or soRAN'roN, PENNSYLVANIA, AssPI'GNon, BY MESNE AssIeN- HENTS, TO ICELESS l A`U".l01![A'IIC REFRIGERATORCOMPANY, A CORPORATION 0F DELAWARE.

TURNING PLUG.

This invention is an improved means for preventing leakage of gasesor other fluids along the stem of a turning plug, and the important features thereof relate to the sealing, seating, packing and cooling of the plug and its operating stem.

The invention may be used in connection with a wide variety of plugs for controlling or through which pass various fluids, but it is particularly useful where there are wide fluctuations in temperature, and where it is very desirable to prevent leakage of a lluid such for instance as ammonia, to the atmosphere. s

In the accompanying drawings I have illustrated certain embodiments of my in.- vention, although itfwill of course be understood that various other embodiments might be designed within the scope of my invention as defined in the appended claim. In these drawings Fig. 1 is a central longitudinal section through a device embodying my invention, aid section being taken on the line 1-1 of Fig. 2 is a central longitudinal section in a plane at right angles to the plane of Fig. 1, said section being taken on the line 2-2 of Fig. 1, I

Fig. 3 is a section on the line 3-3 of Fig. 2.

Figs. e, 5 and 6 are central longitudinal sections of other forms, and

Fig. 7 is an end view of Fig. 6; l

The form illustrated in Figs. land 2 is designed particularly for use in connection with or'as apart of such an apparatus as that illustrated in the Rumpler and Rennau application, Serial. No. 566,367, tiled June 6th, 1922 for refrigerating apparatus. There is employed a tank 10 adapted to serve alten- Jnately as the boiler or the absorber ot a re- :trigeratin machine. A tube 11 is so pesin tioned anc supported that its inner enel 12 may loe swung downwardly to a position below the liquid level or raised to a position above the liquid level. This tube 11 is connected to an ammonia pipe 13 and the tube is opera-ted either automatically or manually,

so that when the tuhe 11 is raised and heat is applied to the tank 10, the gas driven o from the liquid may pass through the tube 11 and pipe 13 to the condenser. When the tube 11 is lowered to bring 12 below the liquid 11 and the supply of heat to the vessel is shut off, the gas may return through the pipe 13 and tube 11 and esca e into and be `absorbed by the liquid. Suc operation forms no portion of m `present invention, but my invention may e employed in con-- nection with the means for' osc1llating the tube 11 and establishing communication between it and the stationary pipe 13.

The tank is illustrated as being provided with a hollow tubular projection 14 eonstituting a casing'for a turning plug 15 which supports and operates the tube 11. The plug is shown as including two sections15 and 15b having conical, oppositely facin portions engaging with conlcal seats 16 an 17. lThe tube 11 is rigidly secured to the plug member 15b and the interior of the tube 11 is in open communication with a passage 18 in this plug section, which latter passage extends axially through the plug section 15b and is in permanent open communication with the pipe 13. Thus in any position of the tube l1 there is a free and unobstructed communication through the plug and between the tube 11 and pipe 13. The casing 14 has a section 19 which may be welded to the body of the casing. Within this casing section 19 is aconical seat 17. The pipe 13 may also project into this casing section and be welded thereto. Thus,

gas-tight connections are established` at this side of the casing 14. i

The two plug sections 15a and 15 are so connected that theyhave limited relative axial movement but are held against relative rotation. The plug section 15b is shown as fitting within a recess inthe end of the plug section 15a, .and rigid with the tube 11, while the section 15a has portions projecting axially beyond or into engagement with the tube 11, so as to lock the parts against rotation but permit rtree separat-ioni endwiset The plug section 15a also carries a coil spring 2@ which acts against the inner end ot the plug section 15b and tends to separate them and hold both against their respective coni cal seats.

In axial alignment with the casing section 19 the casing 14 carries a second` casing section 21 which is in the form of a sleeve and encircles the stem 22 of the turning plug section 14;". Within this sleeve is a shoulder 23 against which seats an an 'I' nularmember'24 presenting the conical seat 16 for the plug section 15. The member 24Yma be put in friction tight, 'or may be hel against rotation by a suitable keyway, or may bethreaded within the sleeve. The member 24 is comparatively short 1n respect to the length of the sleeve, so that beyond the outer end of the seat member there is an annular space within whlch is placed the valve stem packing. I do not wish to be limited to any specific form of packing, -althoueh preferably I employ annular hollow tuzbe'elements 25 of comparativel soft metal. In any event the packing shou d 'be of such character that it is not aii'ected b any ammonia gals which may leak past t ie conical seat 16 into contact with it, and will not? be njuriously affected by temperature changes. rIhe packing may be compressed by any suitable form of gland 26 having threaded or other engagement with the outer end of the sleeve 21. Encircling the sleeve is a second sleeve 27 cooperating with theinncr one to form an annular water space having inlet and outlet connections 28 Jfor water or other coolingefluid.

It will be noted that the turning plug projects from, the body of the casing into the sleeve 21, and that the seat member 24 and the conical seat 16 are thus entirely encircled by the water jacket. The seat and the turning plu are thus kept comparatively cool, and at a airly even temperature irrespective of wide iiuctuations in the temperature of the liquid in the tank 10.

It will be further noted that any compression applied to the packing 25 to prevent leakage along the stem 22 does not in any way changey or affect the tension of the spring 20 which Aacts to hold the plug a ainst its seat. By making the plug sectlon 15 slightly lar er than the plug section 15", and by ma in the seat member 24 removable, it is possi le to weld the casing sections 19 and 21'to the body ortion 14 of the casing rior to the grln ing of the valve seats. fter all of the welding has been done, the seat 17 may be ground ltiy a suitable tool projected endwise throughsleeve 21 and the seat 16 may be groundbefore the seat member 24 is inserted. These advantages are important as the high temperature required for welding is liable to warp or distort the seats if these be so deslgned or constructed that it is necessary i to grind them before the welding takes place.

The sleeve 21 is provided with a passa e 29 therethrough from the water space to t e packing space and the adjacent packing ring may also have an. aperture through it, and may'have its side toward the stem open. Thus the water in the jacket may encircle the stem in direct contact' with the latter and form a water seal so that in case any `ammonia should leak past the seat 16 and the water and carried ofi' in the water circulating system.

The outer end of the stem 22 may be provided with any suitable means for oscillating the plug and raising and lowerlng the tube 11. It will be noted that the conical seats 16 and 17 are in axial alignment and oppositely disposed so that the spring 20 keeps the plug sections properly centered and insures the proper swinging movement of the tube 11.

The casing 14 may have an outer end wall 30 within which is screwed a plug 31, the aperture through the wall 30 serving as a filling opening after the a paratus has been completed and installe This valve plug 31 may have a small passage throuo'h it closed by a needle valve 32 which may be opened to relieve excess pressure or foull gases in the system, should such operation be necessar or desirable. The needle valve is normal y concealed and protected, and leakage is additionally prevented by a ca 33.

In Fig. 4 I have illustrated my invention as applied to a form of turning plug used to control the iow of a liquid or gas. The

plug 15 is formed of a single iece, and isv in the casmg in any suita le manner, as for instance by screw threads or key and keyway. Encircling the sleeve 21 is the water jacket 27 which latter communicates through a passage 29 with a packing. rin section which forms the water seal aroun the valve stem. The v`valve casing here illustrated has welded or otherwise rigidly secured thereto the pipes or pipe connections 35 and 36 for the Huid which is to be controlled by the valve plug, and the valve seat member 24 has passages registering with these pipes or pipe connections.

In Fig. 5 I have illustrated a construction very similar to that shown in Fig. 4, except that the seat 16 for the turning plug is formed integral with the casing 14d instead of a separate seat member. This valve seat evaporator back to the boiler-absorber. Of

. course these valves are capable of various other uses.

In Figs. 6 and 7 I have shown my invention'as applied to a further form of valve.

The casing here shown is substantially thesame as that shown in Fig. 5, except that it has a port which may connect through a pipe 40 to the lowermost part of the evaporator, a second port which may connect through a pipe 41 with the condenser of the refrigerating system, a third port which may connect through a pipe 42 with the bottom of the still, and a fourth port which may connect through a pipe 43 with the top of the still. The valve plug 15 has a passage 44 which may connect pipes 40 and 42, a passage 45 which may register with pipes 42 or 43, and a passage 46 communicating with passage 44 and registering with pipe 41 when passage 46 registers with either of the pipes 42 or 43. In normal operation the valve plug 15e is oscillated to connect pipe 41 of the condenser with either the bottom of the still through pipe 42 during the absorbing period, or the top of the still through pipe 43 during the heating or distilling perlod. When it is desired to remove accumulated liquid from the -bottom u bottom of the evaporator, the plug is turned $6 to connect the pipe 40 with the pipe 42 through the assa 44. The pipe 41 will now be closes andgethe gas pressure in the evaporator will force any liquid from the through the to the stil The packin ere shown is substantially the same as t at above described. The water jacket may be omitted if desired.

Having thus described my invention, what I claim as new'and desire to secure by Letters Patent is:

In combination, a turning plug presentin a conical portion, a stem for operating sai plug, a casing including' a sleeve encircling the stem and integral with the body of the casing, said sleeve having a shoulder at its inner end, an annular member rigidly and detachably secured within said casing and abutting against said shoulder and presenting a conical seat for said plug, a packing within said sleeve, means operating axially of the stem toward said annular member for com ressing the packing, a spring acting axia ly on the plug in the opposite direction to hold it against said seat, and a water jacket encircling said sleeve and communicating with the packing space within the sleeve said jacket having an inlet and an outlet for the circulation of water therethrough.

Signed at N. Y. ci N. Y. and State of N. this 16th day of Nov., '\A. D. 1922.

JACK CARL J ANKUS.

pipe 40 and back 40 in the county of 

